Li Xiaoxiao
Academy of Psychology and Behavior, Tianjin Normal University, Tianjin, China.
Front Psychol. 2021 Jul 5;12:680959. doi: 10.3389/fpsyg.2021.680959. eCollection 2021.
In the natural environment, facial and bodily expressions influence each other. Previous research has shown that bodily expressions significantly influence the perception of facial expressions. However, little is known about the cognitive processing of facial and bodily emotional expressions and its temporal characteristics. Therefore, this study presented facial and bodily expressions, both separately and together, to examine the electrophysiological mechanism of emotional recognition using event-related potential (ERP). Participants assessed the emotions of facial and bodily expressions that varied by valence (positive/negative) and consistency (matching/non-matching emotions). The results showed that bodily expressions induced a more positive P1 component and a shortened latency, whereas facial expressions triggered a more negative N170 and prolonged latency. Among N2 and P3, N2 was more sensitive to inconsistent emotional information and P3 was more sensitive to consistent emotional information. The cognitive processing of facial and bodily expressions had distinctive integrating features, with the interaction occurring in the early stage (N170). The results of the study highlight the importance of facial and bodily expressions in the cognitive processing of emotion recognition.
在自然环境中，面部表情和身体表情相互影响。先前的研究表明，身体表情会显著影响对面部表情的感知。然而，对于面部和身体情绪表情的认知加工及其时间特征，我们知之甚少。因此，本研究分别呈现面部表情和身体表情以及二者同时呈现的情况，以使用事件相关电位（ERP）来检验情绪识别的电生理机制。参与者对面部和身体表情的情绪进行评估，这些表情在效价（积极/消极）和一致性（匹配/不匹配情绪）方面存在差异。结果表明，身体表情诱发了更正向的P1成分和缩短的潜伏期，而面部表情引发了更负向的N170和延长的潜伏期。在N2和P3中，N2对不一致的情绪信息更敏感，P3对一致的情绪信息更敏感。面部和身体表情的认知加工具有独特的整合特征，其相互作用发生在早期阶段（N170）。该研究结果凸显了面部和身体表情在情绪识别认知加工中的重要性。
